It looks like you misunderstood the purpose of OnEvent_UploadFileComplete.
from the scripting docs:
quote:
The OnEvent_UploadFileComplete event is fired when an upload operation previously initiated by MsgPlus::UploadFileFTP completes.
It has nothing whatsoever to do with file transfers, but notifies you when an upload (through Messenger Plus! scripting) to an FTP server has completed.